Why can't I execute the FTP transmission successfully? How to avoid this?

Zyxel_Jeff
Posts: 1,316
Zyxel Employee





in Networking
Scenario :
The customer may encounter a situation where they cannot execute the FTP transmission successfully. What are the possible causes and how can they avoid it?
Answer :
The possible reason is caused by "ICMP Unreachable", as shown in below :
The user can issue CLI commands to disable icmp-destroy-session to avoid this.
Router> configure terminal
Router(config)# firewall icsa icmp-destroy-session disable
Router(config)# write
Router>show firewall icsa status
The Firewall ICSA PATCH switch
ICMP Destroy Session: Off
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